The Rolls-Royce RB.44 Tay was a British

turbojet The turbojet is an airbreathing jet engine which is typically used in aircraft. It consists of a gas turbine with a propelling nozzle. The gas turbine has an air inlet which includes inlet guide vanes, a compressor, a combustion chamber, and ...

engine of the 1940s, an enlarged version of the

Rolls-Royce Nene The Rolls-Royce RB.41 Nene is a 1940s British centrifugal compressor turbojet engine. The Nene was a complete redesign, rather than a scaled-up Rolls-Royce Derwent"Rolls-Royce Aero Engines" Bill Gunston, Patrick Stephens Limited 1989, , p.111 w ...

designed at the request of

Pratt & Whitney Pratt & Whitney is an American aerospace manufacturer with global service operations. It is a subsidiary of Raytheon Technologies. Pratt & Whitney's aircraft engines are widely used in both civil aviation (especially airlines) and military aviat ...

.Connors, p.202 It saw no use by British production aircraft but the design was licence built by Pratt & Whitney as the J48, and by

Hispano-Suiza Hispano-Suiza () is a Spanish automotive–engineering company. It was founded in 1904 by Marc Birkigt and Damian Mateu as an automobile manufacturer and eventually had several factories in Spain and France that produced luxury cars, aircraft en ...

as the Verdon.Gunston 2006, p.101. Two early production examples of the Tay were evaluated during 1950 by the

Royal Aircraft Establishment The Royal Aircraft Establishment (RAE) was a British research establishment, known by several different names during its history, that eventually came under the aegis of the Ministry of Defence (United Kingdom), UK Ministry of Defence (MoD), bef ...

(RAE) at

Farnborough Airfield Farnborough Airport (previously called: TAG Farnborough Airport, RAE Farnborough, ICAO Code EGLF) is an operational business/executive general aviation airport in Farnborough, Rushmoor, Hampshire, England. The airport covers about 8% of Rush ...

Hampshire Hampshire (, ; abbreviated to Hants) is a ceremonial county, ceremonial and non-metropolitan county, non-metropolitan counties of England, county in western South East England on the coast of the English Channel. Home to two major English citi ...

, in a specially modified

Vickers Viscount The Vickers Viscount is a British medium-range turboprop airliner first flown in 1948 by Vickers-Armstrongs. A design requirement from the Brabazon Committee, it entered service in 1953 and was the first turboprop-powered airliner. The Visc ...

Variants

;RB.44 Tay:Rolls-Royce development engines only, no production. ;Hispano-Suiza Tay 250:The Tay built under licence in

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...

. ;Hispano-Suiza Tay 250A:The Tay built under licence in France. ;Hispano-Suiza Tay 250R:The Tay built under licence in France. ;Hispano-Suiza Verdon 350:The Tay developed under licence in France. ;Hispano-Suiza Verdon 370:The Tay developed under licence in France. ;Pratt & Whitney J48: The Tay built and developed under licence in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

Applications

Vickers 663 Tay Viscount VX217 MoD FAR 09

;Tay *

Vickers 663 Tay Viscount The Vickers Viscount is a British medium-range turboprop airliner first flown in 1948 by Vickers-Armstrongs. A design requirement from the Brabazon Committee, it entered service in 1953 and was the first turboprop-powered airliner. The Visco ...

;Verdon *

Dassault Mystère IV The Dassault MD.454 Mystère IV is a 1950s French fighter-bomber aircraft, the first transonic aircraft to enter service with the French Air Force. It was used in large-scale combat in the Israeli Air Force during the 1967 Six Day War. Design ...

Specifications (Hispano-Suiza Verdon 350)

References

;Notes ;Bibliography * * * * {{Hispano-Suiza aeroengines

Tay Tay may refer to: People and languages * Tay (name), including lists of people with the given name, surname and nickname * Tay people, an ethnic group of Vietnam ** Tày language *Atayal language, an Austronesian language spoken in Taiwan (ISO 639 ...

1940s turbojet engines Centrifugal-flow turbojet engines

Variants

Applications

Specifications (Hispano-Suiza Verdon 350)

See also

References